if there is a short driveshaft between the t case and tranny its a hiboy 
What Defines a "HighBoy"?
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Postmaster
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From: Over There
What Defines a "HighBoy"?
I hear the term highboy all the time but have always wondered exactly what it means? Is it that they are taller stock, cause pretty much all solid axle 4WD Fords sit pretty high? So is saying you have a 4X4 Highboy redundant? Is it that it has a high pinion front axle, or that it's high steer? Or really none of it and just a term people throw around?
Really just curious to feed my personal curiosity.
Really just curious to feed my personal curiosity.
Posting Guru
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From: Sedro-Woolley, WA
The split between the 77 and the 77.5 4x4s. The early 77s had the divorced transfer case and sat a little higher than the post 77.5s.
In its pure form the term only refers to the 77s.
To say you have a 76 Highboy is redundant since all 76s had the divorced transfer cases.
In its pure form the term only refers to the 77s.
To say you have a 76 Highboy is redundant since all 76s had the divorced transfer cases.
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From: S/W Missouri, Polk county
Posting Guru
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From: Sedro-Woolley, WA
Logistics Pro
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From: penn twp.
There is more than just the three drive shafts that define the highboy truck. There is also the front cross member under the front bumper. The frame width gets narrower after the cab. Also no highboy truck was available with a gas tank under the bed from the factory at all. Only the in cab tank. Some of the most common mods made to highboy trucks was the power steering. Some guys change the steering from the ram assist that is prone to leaking to the later crossover steering gear box from the 77.5 and newer 250's. And putting 1-2 gas tanks under the bed.
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Logistics Pro
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From: Townsend, MT
Nope. It just doesn't get wider.
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I think there is a skip in the record,Im not sure what it is,just glad I have one 1975 Highboy redundant
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The link will tell you everything you could ever want to know...but the simplest answer of all is any 250 4x4 produced from 67-77.5 (before serial # Y20,001) is a highboy. It's an enthusiast term and those are the generally accepted years and cutoff. You can go on for days about the differences between a 76 and 79...but it doesn't matter, there were NOT 2 different 4x4 250's produced during 67-77.5 where one sat taller than the other. So to recap...if you have a 250 4x4 built between 67-77.5 (before Y20,001)...it's a highboy.
Post Fiend
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From: Kasson, Minnesota
And the Highboy term refers to only the Regular Cab F250 4x4, not anything else even though others have used a divorced T case like the crewcabs I think. Either way though, this topic is always gonna come up and people with argue the term all day long about this and that and what their truck is and isn't.
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